Thrown pinch shuttle



June 5, 1928.

M.` B. LLoYD ummm Pmcn SHUTTLE June 5. 1928.

M. B. LLOYD THRow'n 15mm'- SHUTTLE Filed Jam-15, 1926 Patented June 5, 1928.

UNITED STATES PATENT ortica.

MARSHALL B. LLOYD, OF MENOMINEE, MTCHIGAN, ASSIGNOR TO HEYWOOD-WAKE- FIELD COMPANY', 0F .'.BOSTONQl MASSACHUSETTS, .A CORPORATION OF MASSACHU- SETTS.

THBQWN PINCE SHUTTLE.

. Anneau-0n mea January 15, 192s. serial N0.' s1,524.

This invention relates to improvements in y thrown pinch shuttles and vit consists ot the matters hereinafter described and more particularly 'pointed out' in kthe 'appended claims. v

The main object ofthe invention is to provide a duplex vpinch shuttlel adapted to be thrown or reciprocatedY along the beam of a reed fabric weaving machine after each changeA in the shed and 'to pickxupa weft stake at one end or limit of lits throw and upon reverse movement of the shuttle to in sert said weft stake in the shed and when it reaches the other limit ot its throwyto release said weit stake and pick up yanother one which is laid in the next succeeding shed in'the next throw of the shuttle and so on.y

A further Object of the invasion is to -providea thrown shuttle having a gripping or'pinching `means at'each end with parts associated therewith in such a ,manner that when the shuttle is at one end of its throw, one ot the gripping means which was open, operates to close upon and gras-p a stake while the other gripping means on thel Opposite end of the shuttle which was closed upon af stake, is opened to releasethesame, theV gripping'means at each endofthe shuttle operating lin alternation to open and close, andv thus release one weftstake'and toy grasp Aanother one.

Still another object of the invention is to provide a duplex thrown shuttle, which will be positive and eicient in operation at high speed, which is simple in construction and strong and rigid although it is light in weight and which may be easily assembled.

These objectsl ot the invention as well as others together with the .many advantages thereof will more iully appear as I' proceed with my specification.

Fig. 1 isa top plan view of a duplex thrown shuttle embodying my invention.

Fig. 2 is a longitudinal verticalsection on an enlarged scale' of F ig. l.

Fig. 3 is a view similar to Figt2y with some ofthe parts thereof ina changed. position. y L L Fig. 4' is a4 longitudinal section through the shuttle body, with the parts normally carried thereby omitted therefrom.

as taken on lthe line Fig. 5` is another longitudinal vertical sect-ion on a further enlarged scale, with the parts thereof ina position corresponding vto that shown in Fig. 2.

Figs. 6, 7 and 8 "are transverse vertical 'sections through theshuttle as taken on the lines 6,-6, 7*-7 and 8--8 v respectivelyv of v Fig. 5.

Fig. 9- is a view in side elevation of the im roved shuttle. v I

`eferring now in detail to that embodiment of my invent-ion illustrated in the accompanying drawing. l indicates asa whole, the body' of the shuttle which is ofthe usual shape ot athrownv shuttle and which may be readily' made ofl metal or fibre.l Said body vvhichis of a rectangular cross section,

is of a suitablelength and is tapered or 1 somewhat-y pointed atits ends as at' 2--2 `for engagement with the picksy of the loom by whichl it is thrownacross the beam. The shuttle body includes upright front and rear ,walls 3 and 4 respectively and a. bottom wall 5 which together with the tapered ends 2 2 deline a. recess 6' in the body in. which thek operative part-s of the shuttle areylocated. In eachy tapered end 2 2 of the body is 'an axiallydisposed openi 7 which communicates withV the recessA shuttle `body, .is made of metal suitable` openings 8 may be formed inthe Walls of the to materially reduce the weight there- Secured to the bottom wall 5 of the shuttle body, within the recess' and midway between the ends thereofis an elongated, longitudinally extending'I block 9, the ends of which are formed to provide bosses 10-10 and in the top surface ofv said block between said lbosses is formed a bearing groove ll. As both sets of the parts associated with the bosses.'10-10"are `substantial duplicates, a detailed description of one set of parts will sutlice forfboth'. Threaded into each boss l0 from its outer end' is a tubular bushing 12 vwhich includes an' exteriorly threaded extension 13'. Threaded on to said extension is a `sleeve 14'which in -itself'includes a :tubular en. the l outer ends ot said members are formed to provide jaws 17-17 which extends through the opening 7 in the associated end oit the shuttle body, the opposed inner surfaces of said jaws have transversely disposed teeth 18 to increasethe gripping or pinching ace tion thereof. The members 16 and 16 are made ot a spring metal so that the jaws are normally urged towardeach other and adjacent said jaws are t'ormed opposed wedge engaging shoulders 19-19.

Slidable in the bushing 12 is plunger 20, the inner end of which includes a rectangular guide head 21 that has a sliding guidling bearing in the groove 11 of the bloclr 9.

In said guide head is a transversely disposed rectangular recess22 (see Fig. 5) in which a cross head 23 is securely fixed by a pin 24. The cross head carries a laterally eX- tending stud 25 on that end adjacent the side wall 3, the purpose of which will appear later. The outer end of the plunger 20 is threaded ,to receive a washer and coacting adjustable lock nuts 27 which are Alocated in an upwardly opening recess 28 provided in the bushing 14 for that purpose. lThreaded into the outer end of said plunger is the inner end of a wedge rod 29, which has sliding bearing in the extension 15 on thesleeve 14. The outer end of said rod 29carries a duplex wedge 30 adapted to be engaged with the opposed shoulders 19--19 of the gripping members. l/Vhen the rod 29 moves or is projected endwise outwardly, the wedge 30 by reason oit its engagement with .said shoulders 19 will cause the gripping or pinching jaws to be spread apart or open as shown at the left hand end of Fig. 2 and when said rod 29 is retracted inwardly, said wedge is withdrawn from said lshoulders and the yielding action oit said. members 16, 16 will close said jaws to tightly grip upon such a member or object as is presented be tween them as tor example a weft stake of reed or like material. l f

.Means are provided for imparting endwise movement to the wedge rods in alternation lso that when. the shuttle isin operation and approaches the limit of its throw in one directionacross thevbeam of the loom or weaving machine with which it is used, the jaws at the advancing end thereof and which are open, are caused to be closed, while the jaws at the trailing end. thereof` which were closed upon a stake are caused to be opened. When the shuttle approaches the limit of its throw in the other direction, the last mentioned jaws are closed and the first mentioned ones arev opened. Associated Vwith eachr wedge rod is a trigger 3l, positioned between the block 9 and .side wall 3 of the shuttle, the bottom end of said trigger being pivoted on a shifting fulcrum formed by a screw 32 carried on the rear end'ot a link 33. The front end of said link is pivoted by a screw 34 to the end o't the block 9. In

said trigger near its bottom end is an opentrigger projects a slight distance labove the n associated side wall 3 ofv the shuttle so as to engage with suitable tripping shoulders on the loom or weaving machine during the throw of the shuttle. As best shown in Fig. 1, the top ends of said triggers are offset into ditiferent transverse planes of the shuttle so as to engage with suitable tripping means on the loom not herein shown. In the throw of the shuttle the triggers will engage with said tripping means and both swing in-.t-he same direction, but as the gripping or pinching jaws face in opposite directions, it is apparent that when the jaws on one end of the shuttle are caused to open, the jaws on the other end are caused to close and vice versa.

By reason of lthe adjustment providedfby the threaded connections betweenthe wedge rods 29 and plungers 2O as wellv as the threaded connect-ions between the other parts of the mechanismJ the opening and closing of the jaws may be nicely determined.

When the shuttle is beingl thrown to the left as vindicated by the arrow A in Fig.'` 2, the gripping or pinching jaws. at thel lett hand end thereof are open and the jaws at the right hand end. of the shuttle arel closed to grip or pinch a member 37 between them which may be a wett member or stake such as is employed in the weaving of reed tabric. When said shuttle reaches the end off its throw. towards the left through the warp shed, the triggers engage coacting tripping `devices and the jaws at the rightl hand end open to release the wett or stake member 37 and the jaws at the left hand end ot the shuttle close or grip upon another member 37'@l as best shown in Fig. 3. When the shuttle is thrown to the right as indicated by the arrow Bin Fig. 3 said weft member 37a is inserted through the shed and deposited therein and the jaws at the right hand end thereof which are open now close upon or grip another weft member and yso on.

It is apparent that my improved shuttle which is of the socalled pinch7 type is duplex not only in construction but in operation, but carries no pirn or bobbin. It is positive and efficient in operation, at the high speed at which it is thrown. and although simple in construction, the parts are so formed` as to be strong and rigid and renace y y B referred in dama to the Constr'netamand form as well as the relative positienand'a-'rrangement of the 'parte thereof, the 'same is for the 'purpose @if illustration "only so that g I do not wish tor be limited thereto except as may be pointed out in the appended claims. i f I claim as my invention: rl. A lthrown pinch' 'shuttle embodying therein, va shuttlebody having ia` lorgitudi-I'lal ing said pinching members.

2. A thrown pinch shuttlev embodying therein, ashuttlebody, a pair of cooperating pinching members at one end of the body, with their inner ends fixed .with respect to the shuttle body and with their outer ends capable of yielding toward and away from each other, a wedge member interposed between said members, and movably guided in the body, and a trigger arranged at a point between the ends of the body and operatively engaged with said wedge rod and adapted as the shuttle approaches the end of its throw to directly engage a fixed part of the loom for actuating the wedge rod to open and close said pair of cooperating pinching members.

3. A thrown pinch shuttle embodying therein, a shuttle body, a pair of cooperating f pinching membersat one end of thebody, with their inner ends fixed with respect to the shuttle body and with their outer ends capable of yielding toward and away from each other, a wedge member interposed between said members, and movably guided in the body, and a trigger arranged at a point midway between the ends of the bod associated with the inner end of said we ge rod and adapted as the shuttle approaches the end of its throw to directly engage a fixed part of the loom` for actuating the wedge igod to open and close said pinching memers.

1l. A thrown shuttle embodying therein, a shuttle body, a pair of cooperating pinching members at each end of the body, a wedge block positioned between each pair of members, means associated vwith the inner end of each wedge rod providing a non-rotative sliding bearing therefor, a trigger located at a point midway between the ends of said body and operatively engaged with the inner end of each wedge rod and operative as the shuttle approaches each end of its throw to engage a fixed part of thek loom` te dispara ienwise 'mvsment to seid wedge rodsfto epenand-elese said pa'rsjof pinching' yinearners in' y alterna- 5. A thrown shuttle embodying therein, a eher-ble terry,I a pail-r efeoeperetmg pineamgk members at each end of the lbody, a

"wedge lbleek positioned between Eeach pair Vof members, means ambt-,shame body previa- Jiing 'a guide "roeve, mea-'ns en the inner end ef-erenI wedge roerend slidable in lsaid groeve for `landing' the wedge ma against y rotation While permitting reciprocation thereof, and an actuating trigger operatively connected to the inner end of each wedge rod for reciprocating them to open and close said pinching members.

6. A thrown shuttle embodying therein, a shuttle body, a pair of cooperating pinching members at each end of the body, a wedge block positioned between each pair of members, means on the shuttle body providing a guide groove, means on the inner end of each wedge rod and slidable in said groove for holding the wedge rod against rotation while permitting reciprocation thereof, an actuating trigger operatively supported in said shuttle body, and a laterally extending stud on the inner end of the Wedge rod engaged with said trigger.

7 A thrown pinch therein, a shuttle body, a bearing shuttle embodying block on the bottom thereof, a tubular bushing in said block, a sleeve adjustably carried by said bushing, a pair of coacting pinching members fixed tosaidsleeve, a wedge rod slidable through the sleeve for opening and closing said pinching members, a plunger slidable in said bushing, and means for actuating said'plunger.

8. A thrown pinch shuttle embodying therein, a shuttle body, a bearing block on the bottom thereof, a tubular bushing in said block, a sleeve adjustably carried by said bushing, a pair of coacting pinching lmembers fixed to said sleeve, a wedge rod slidable through the sleeve for opening and.

closing said pinching members, a plunger slidable in said bushing, and including a guide head slidable on said block and a trigger pivoted on said block and operatively connected to `said guide head.

9. A thrown -pinch shuttle embodying therein a hollow shuttle body having'an axially disposed opening in each end thereof and a. pair of cooperating pinching members arranged in each end of the hollow body and having parts normallyv extending through the opening thereof and beyond the same. 10. A thrown pinch shuttle embodying therein a hollow shuttle body having an axially disposed opening in each end thereof,

a pair of cooperating pinching members arranged in each end of the hollow'body'and having parts normally extending through the openings thereof and beyond the same, and means associated .with each pair of pinching members andk carried by 'said body y .tle approaches the ends of its throw.,y

Il. A thrown pinch shuttle embodying therein a hollowkshuttle body having an axially disposed .opening in each end thereof, aV pair of. coacting pinching members arranged in each end of the hollow body and having parts .normally extending through the `opening' thereof and beyond the saine and means carried by said body at the middie thereof andL ada ted to engage iXed parts of a loom as t e shuttle approaches the ends of its throws for actuating the said pairs of pinching members to open andclose them on alternation. v y, f

`In testimony whereof,I I have hereuntoy set my hand, this `17th day of-December,c1925.

MARSHALL B. LLOYD. 

